algorithms

Numerical Algorithms Group
Based in Oxford, England with branches in France, Germany, Japan and North America.
http://www.nag.co.uk/

National Institute of Standards and Technology
NIST is the federal technology agency that works with industry to develop and apply technology, measurements, and standards.
http://www.nist.gov/

Design and Analysis of Computer Algorithms
Lecture notes; applets and code in C, C++, and Java; links regarding books, journals, computability, quantum computing, societies and organizations.
http://www.personal.kent.edu/~rmuhamma/Algori...

Classification Toolbox for MATLAB
A complete set of algorithms for classification, clustering, feature selection and reduction for Matlab. [FREE]
http://www.yom-tov.info/toolbox.html